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Conductor rail
| Глоссарий в железнодорожной технике |
- An additional rail (or rails) provided on those electric railways where power is transmitted to trains from the track. often referred to as the `third rail` or `current rail` , it is normally at positive potential and is mounted on insulators to the outside of and slightly higher than the running rails. the return of the circuit is via the running rails. the current is collected by the train through `shoes`, attached to the bogies, which slide along or under the rail. varieties of the system include top, side and bottom contact rails. top contact rails are susceptible to ice and snow contamination in cold climates and present a certain risk to persons walking on the track. for this reason, bottom contact rails are preferred for modern systems. illustrations and descriptions here. the continuity of conductor rails must be broken at junctions in the track to allow continuity of the running rails. such `gaps` may cause momentary loss of power to the train. there are cases from time to time of trains becoming `gapped` at complex junctions, i.e. they stall over a gap and have to be rescued by another train. london underground has a fourth rail (negative) for a completely insulated circuit. it is known as a four rail system.
- A rail through which dc electricity is supplied to electric trains operating on the third rail system.
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Current rail, английский
See conductor rail.
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Conductor, английский
- A substance which permits the flow of current.
- A wire or combination of wires not insulated from one another, suitable for carrying an electric current.
- 1. a substance or object which allows heat, electricity, light or sound to pass along it or through it 2. a tube with a groove in it along which a knife is slid to cut open a sinus
- A thick metal wire, generally of copper, extending from above the main truck downwards into the water, or in the form of a chain with long links. its use is to defend the ship from the effects of lightning, by conveying the electric fluid into the sea.
- A relatively short length of pipe driven through the unconsolidated zone of top soil as the first step in collaring a borehole. also called conductor pipe, stand pipe.
- In petroleum drilling, the piping carried through overburden to bed rock or the first string of casing placed in a borehole.
- The material through which electricity is transmitted, such as an electrical wire, or transmission or distribution line.
- A material used to transfer, or conduct, electricity, often in the form of wires.
- The material through which electricity is transmitted, such as an electrical wire,
- Us term for train staff member whose duties vary with different administrations but who is primarily responsible for train and passenger safety. often also involved with ticket inspection. in uk parlance was often referred to as the `guard` but the same term is now common.
Conductor, английский
Conductor, английский
Conductor, английский
Conductor, испанский
Conductor casing, английский
Steel casing hammered or pushed into place where soil strata are high in gravel and cobble content or where formation strength is low and the bore would be unstable.
Conductor core, английский
The center strand or member about which one of more layers of wires or members are laid helically to form a concentriclay or ropelay conductor.
Conductor failure, английский
Conductor finger, английский
Проводящая
Conductor guide arm, английский
Направляющая штанга колонны направления (служит для ориентированного спуска колонны по направляющим канатам и ввода ее конца в устье подводной скважин
Conductor head, английский
Conductor housing, английский
Головка колонны направления
Conductor pipe, английский
Conductor resistance, английский
Conductor screen of semi-conducting tape, английский
Conductor shielding, английский
A metallic sheath which surrounds an electric conductor. conduit 1. a tube or pipe used to protect electric wiring. 2. a tube or pipe used for conveying fluid. 3. any channel intended for the conveyance of water, whether open or closed.
Conductor string, английский
Conductor 2
Conductor suspension joint, английский
Секция колонны направления для подвеоки головок последующих обсадных колонн
Conductor [oris, m], латинский
Conductor, chofer, испанский
Additional, английский
- Дополнительный 33
- Дополнительный; добавочный
Susceptible, английский
Contamination, английский
- Usually an undesirable situation where radioactive material in an unsealed source (open source) state is present in the working environment, or otherwise un-contained and not required. contamination can either be loose (easily removed) or fixed. loose con
- Загрязнение; заражение
- The introduction of sewage, wastes, and/or chemicals (or other material) into a potable water supply that render it unfit for its intended purpose. contemporary style an imprecise term applied to any of a number of architectural modes popular from about the 1940s through the 1970s and beyond, sometimes included under the term modern architecture; often characterized by widely overhanging eaves, exposed roof beams, and front-facing gables with heavy piers that support the gables; often, a balcony with an overhanging sunscreen, roof decks, and a patio that may serve as an extension of the living area; another type has a facade and flat roof resembling that of the international style. continuous beam 251
- The action of contaminating something, or the state of being contaminated the contamination resulted from polluted water.
- N лнгв., лит. контаминация (син. blending)
- Инфицирование; контаминация
- The act or process of a substance being diluted or admixed with another material, which may render the original substance unfit for use. see contaminate.
- Undesirable substances (dust, fibers, etc.) in the coating system and powder coating
- Загрязнение. увеличение количества аналита в процессе экстрак-ции в противоположность наблюдаемым обычно потерям, которые оцениваются по выходу.
- Загрязнение. увеличение количества аналита в процессе экстракции в противоположность наблюдаемым обычно потерям, которые оцениваются по выходу.
- Introduction of unwanted microorganisms
Continuity, английский
- Непрерывность
- N непрерывность (ант. discreteness)
- Неразрезность; сплошность; непрерывность, неразрывность ~ of mass непрерывность [сплошность] массы
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P-wire control, английский
An analogue form of electro-pneumatic brake control using a single wire carrying a pulse width modulated signal. the current level on the circuit determines the rate of brake demanded. zero current initiates an emergency brake demand. this type of control can eliminate the need for a brake pipe, a source of much trouble on trains.
Main reservoir pipe, английский
Air pipe connecting all main reservoirs on a train from which supplies for pneumatic systems are drawn. connections between cars are via flexible hoses. normally, each vehicle has main reservoir pipe isolating cocks at each end of the pipe to allow uncoupling of hoses without loss of main reservoir pipe pressure. see the brakes page for more details.
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